package com.sias.oj.controller;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.sias.oj.annotation.AuthCheck;
import com.sias.oj.common.BaseResponse;
import com.sias.oj.common.DeleteRequest;
import com.sias.oj.common.ErrorCode;
import com.sias.oj.common.ResultUtils;
import com.sias.oj.config.WxOpenConfig;
import com.sias.oj.constant.UserConstant;
import com.sias.oj.exception.BusinessException;
import com.sias.oj.exception.ThrowUtils;
import com.sias.oj.model.dto.user.*;
import com.sias.oj.model.entity.User;
import com.sias.oj.model.vo.LoginUserVO;
import com.sias.oj.model.vo.UserVO;
import com.sias.oj.service.UserService;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.bean.WxOAuth2UserInfo;
import me.chanjar.weixin.common.bean.oauth2.WxOAuth2AccessToken;
import me.chanjar.weixin.mp.api.WxMpService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

/**
 * 用户接口
 *
 * @author <a href="https://github.com/sogra">程序员sogra</a>
 */
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

  @Resource
  private UserService userService;

  @Resource
  private WxOpenConfig wxOpenConfig;

  // region 登录相关

  /**
   * 用户注册
   *
   * @param userRegisterRequest
   * @return
   */
  @PostMapping("/register")
  public BaseResponse<Long> userRegister(@RequestBody UserRegisterRequest userRegisterRequest) {
    if (userRegisterRequest == null) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    String userAccount = userRegisterRequest.getUserAccount();
    String userPassword = userRegisterRequest.getUserPassword();
    String checkPassword = userRegisterRequest.getCheckPassword();
    if (StringUtils.isAnyBlank(userAccount, userPassword, checkPassword)) {
      return null;
    }
    long result = userService.userRegister(userAccount, userPassword, checkPassword);
    return ResultUtils.success(result);
  }

  /**
   * 用户登录
   *
   * @param userLoginRequest
   * @param request
   * @return
   */
  @PostMapping("/login")
  public BaseResponse<LoginUserVO> userLogin(@RequestBody UserLoginRequest userLoginRequest, HttpServletRequest request) {
    if (userLoginRequest == null) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    String userAccount = userLoginRequest.getUserAccount();
    String userPassword = userLoginRequest.getUserPassword();
    if (StringUtils.isAnyBlank(userAccount, userPassword)) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    LoginUserVO loginUserVO = userService.userLogin(userAccount, userPassword, request);
    return ResultUtils.success(loginUserVO);
  }

  /**
   * 用户登录（微信开放平台）
   */
  @GetMapping("/login/wx_open")
  public BaseResponse<LoginUserVO> userLoginByWxOpen(HttpServletRequest request, HttpServletResponse response,
                                                     @RequestParam("code") String code) {
    WxOAuth2AccessToken accessToken;
    try {
      WxMpService wxService = wxOpenConfig.getWxMpService();
      accessToken = wxService.getOAuth2Service().getAccessToken(code);
      WxOAuth2UserInfo userInfo = wxService.getOAuth2Service().getUserInfo(accessToken, code);
      String unionId = userInfo.getUnionId();
      String mpOpenId = userInfo.getOpenid();
      if (StringUtils.isAnyBlank(unionId, mpOpenId)) {
        throw new BusinessException(ErrorCode.SYSTEM_ERROR, "登录失败，系统错误");
      }
      return ResultUtils.success(userService.userLoginByMpOpen(userInfo, request));
    } catch (Exception e) {
      log.error("userLoginByWxOpen error", e);
      throw new BusinessException(ErrorCode.SYSTEM_ERROR, "登录失败，系统错误");
    }
  }

  /**
   * 用户注销
   *
   * @param request
   * @return
   */
  @PostMapping("/logout")
  public BaseResponse<Boolean> userLogout(HttpServletRequest request) {
    if (request == null) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    boolean result = userService.userLogout(request);
    return ResultUtils.success(result);
  }

  /**
   * 获取当前登录用户
   *
   * @param request
   * @return
   */
  @GetMapping("/get/login")
  public BaseResponse<LoginUserVO> getLoginUser(HttpServletRequest request) {
    User user = userService.getLoginUser(request);
    return ResultUtils.success(userService.getLoginUserVO(user));
  }

  // endregion

  // region 增删改查

  /**
   * 创建用户
   *
   * @param userAddRequest
   * @param request
   * @return
   */
  @PostMapping("/add")
  @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
  public BaseResponse<Long> addUser(@RequestBody UserAddRequest userAddRequest, HttpServletRequest request) {
    if (userAddRequest == null) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    User user = new User();
    BeanUtils.copyProperties(userAddRequest, user);
    boolean result = userService.save(user);
    ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
    return ResultUtils.success(user.getId());
  }

  /**
   * 删除用户
   *
   * @param deleteRequest
   * @param request
   * @return
   */
  @PostMapping("/delete")
  @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
  public BaseResponse<Boolean> deleteUser(@RequestBody DeleteRequest deleteRequest, HttpServletRequest request) {
    if (deleteRequest == null || deleteRequest.getId() <= 0) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    boolean b = userService.removeById(deleteRequest.getId());
    return ResultUtils.success(b);
  }

  /**
   * 更新用户
   *
   * @param userUpdateRequest
   * @param request
   * @return
   */
  @PostMapping("/update")
  @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
  public BaseResponse<Boolean> updateUser(@RequestBody UserUpdateRequest userUpdateRequest,
                                          HttpServletRequest request) {
    if (userUpdateRequest == null || userUpdateRequest.getId() == null) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    User user = new User();
    BeanUtils.copyProperties(userUpdateRequest, user);
    boolean result = userService.updateById(user);
    ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
    return ResultUtils.success(true);
  }

  /**
   * 根据 id 获取用户（仅管理员）
   *
   * @param id
   * @param request
   * @return
   */
  @GetMapping("/get")
  @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
  public BaseResponse<User> getUserById(long id, HttpServletRequest request) {
    if (id <= 0) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    User user = userService.getById(id);
    ThrowUtils.throwIf(user == null, ErrorCode.NOT_FOUND_ERROR);
    return ResultUtils.success(user);
  }

  /**
   * 根据 id 获取包装类
   *
   * @param id
   * @param request
   * @return
   */
  @GetMapping("/get/vo")
  public BaseResponse<UserVO> getUserVOById(long id, HttpServletRequest request) {
    BaseResponse<User> response = getUserById(id, request);
    User user = response.getData();
    return ResultUtils.success(userService.getUserVO(user));
  }

  /**
   * 分页获取用户列表（仅管理员）
   *
   * @param userQueryRequest
   * @param request
   * @return
   */
  @PostMapping("/list/page")
  @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
  public BaseResponse<Page<User>> listUserByPage(@RequestBody UserQueryRequest userQueryRequest,
                                                 HttpServletRequest request) {
    long current = userQueryRequest.getCurrent();
    long size = userQueryRequest.getPageSize();
    Page<User> userPage = userService.page(new Page<>(current, size),
            userService.getQueryWrapper(userQueryRequest));
    return ResultUtils.success(userPage);
  }

  /**
   * 分页获取用户封装列表
   *
   * @param userQueryRequest
   * @param request
   * @return
   */
  @PostMapping("/list/page/vo")
  public BaseResponse<Page<UserVO>> listUserVOByPage(@RequestBody UserQueryRequest userQueryRequest,
                                                     HttpServletRequest request) {
    if (userQueryRequest == null) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    long current = userQueryRequest.getCurrent();
    long size = userQueryRequest.getPageSize();
    // 限制爬虫
    ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
    Page<User> userPage = userService.page(new Page<>(current, size),
            userService.getQueryWrapper(userQueryRequest));
    Page<UserVO> userVOPage = new Page<>(current, size, userPage.getTotal());
    List<UserVO> userVO = userService.getUserVO(userPage.getRecords());
    userVOPage.setRecords(userVO);
    return ResultUtils.success(userVOPage);
  }

  // endregion

  /**
   * 更新个人信息
   *
   * @param userUpdateMyRequest
   * @param request
   * @return
   */
  @PostMapping("/update/my")
  public BaseResponse<Boolean> updateMyUser(@RequestBody UserUpdateMyRequest userUpdateMyRequest,
                                            HttpServletRequest request) {
    if (userUpdateMyRequest == null) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    User loginUser = userService.getLoginUser(request);
    User user = new User();
    BeanUtils.copyProperties(userUpdateMyRequest, user);
    user.setId(loginUser.getId());
    boolean result = userService.updateById(user);
    ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
    return ResultUtils.success(true);
  }
}
